UPDATE: The INITIAL shots fired REPORT is a smash and grab robbery w/ hammers at Ben Bridge Jewelers in Tyler Mall per sources
Brit Michael Sandford accused of trying to seize @LVMPD officer's gun per fed.complaint. Told FBI agent of "conscious effort" to kill Trump
BRK: Sources tell @NBCInvestigates suspect is dead at pursuit termination location after officer-involved shooting involving West Covina PD.
NEW: FBI searched California house of man authorities believe originally bought the assault rifles used in San Bernardino shooting rampage